Separator shield



Nov. 9, 1948. R. K. WHITELHEAD SEPARATOR SHIELD Filed June 3, 1947 FIG.

INVENTOR. RICHARD K. WHITEHEAD ATTORN EYS.

Patented Nov. 9, 1948 UNITED STATES PATENT SEPARATOR SHIELD Richard K. Whitehead, Atlanta, Ga. Application June 3, 1947, Serial No. 752,089

3 Claims. 1

My invention relates to separator shields of the kind employed on spinning frames, twisting frames, and the like.

' In the past, separator shields, and full assem blies of separator shields as for spinning frames, have been relatively cumbersome. In some cases, these shields have been made from steel stampings, slotted to reduce the weight of an assembly of separator shields. Such a structure may be objectionable, for the reason that the slots tend to roughen the yarn which is being spun. In other attempts to reduce the weight of an assembly of separator shields, the complete shield has been formed in a die-casting operation, utilizing aluminum or other light alloys. The latter construction has overcome previous objections, but not without presenting a problem of its own. This problem concerns a high percentage of structural failures, for the die-cast shield will not stand shock or bending and straightening without breakage.

It is, accordingly, an object of my invention to provide an improved separator shield of the character indicated.

It is. another object to provide an improved separator shieldthat will be light in weight, that will not roughen the yarn being spun, and that will besufilciently flexible to absorb shock, bending, and straightening without breakage.

It is in general an object of my invention to provide a light-Weight separator shield which will have, inherently long life and which may not impair the quality of product made by the machine to which the shield is adapted.

' Other objects and various further features of the invention will be pointed out or will occur to those skilled in the art from a reading of the following specification in conjunction with the accompanying drawings. In. said drawings:

,Fig. 1 is a fragmentary plan view of an assembly of separator shields incorporating features of the invention, shown in application to a ring rail of a spinning or twisting frame;

Fig. 2 is an. enlarged sectional view taken substantially in the plane 2-2 of Fig. 1;

Fig. 3 is a perspective view of a separator shield according to the invention, shown mounted on a supporting bar;

Fig. 4 is a fragmentary sectional view taken through the plane 4-4 of Fig. 1;

Fig. 5 is an enlarged sectional view taken in. the plane 5-5 of Fig. 4; and

Fig. 6 is a vertical sectional view through a permanent mold to illustrate a preferred method of fabricating a separator shield according to the invention.

Briefly stated, my invention contemplates an improved separator-shield construction, in which the blade is formed of stamped sheet material that is preferably resilient and light in weight;

IS in order to separate (in a non-interfering. relationship) the yarns being spun or twisted on a hub for the shield may be cast or molded in- In the form to be described, the blade is preferably of light-weighttegrally with the blade.

aircraft-alloy aluminum sheet, stamped into a desired shape, with an opening to be employed for securing the same to its supporting hub. The hub is also preferably of aluminum and is cast integrally with the part of the blade which includes the opening, so that the completed shieldv spindles (not shown) within the rings Hi. The

brackets I2 may be formed with suitable inner.

slotted contours Hi to retain the supportingbar II in a first position (see the solid-line outlines of Fig. 2) separating the spindles in rings l5, or in a second position (see dot-dash or phantom outlines of Fig. 2) for retracting the separator shields, as in a doffing or donning operation.

In accordance with the invention, the separator shields I0 are formed from essentially two elements.

as aircraft-alloy aluminum. The second element of my novel shield assembly is a hub M3 for use in securing the same to the bar II. The hub 18 is preferably cast or molded so as to be integral with the blade IT, and in the form shown, the hub l8 includes two side members I92Il to embrace portions of opposite sides of the blade 11. The hub casting is also preferably of aluminum alloy or other light-weight material.

The blade I! preferably includes one or more openings 2!, to be flooded in the process of mold ing the hub I8 to the blade ll. Since the side members I9--20 are thus integrally bonded together through the openings 2| and over extended parts of the side surfaces of the blade ll, the hub I8 may be securely locked (in effect, as one piece) with the blade H. To complete the shield assembly, the hub l8 may also be formed with a supporting yoke having a bar-engaging groove or slot 22 and with a tapped hole to receive securing means in the form of a screw 23 passing through the bar I I and engaging the hub l8.

In a preferred form, the ruggedness of my separator shield assembly is considered to be enhanced by locating the openings 2| near a cor- OFFICE The first element or blade I! may be of, sheet material, and preferably 'theblade I1 is a. stamping from a light-weight resilient metal, such and blade I! may be formed in a-'relatively'simplemolding operation, which, for example, may, em..- ploy a permanent mold 26. In Fig. 6, I show one half of such a mold 26, with theblade I! set .into overlapped-relation: with" a part of the. cavity 21 used to define the'hub' I8; The permanentfmol'd" 26 prefera'bly provides an extendedtailopening 28 to assure acomplete fil'l'ingof the hub cavity and-Thence an effective bondbet'ween the hub I81 andtheblade H; Prefe1'ably3the tail opening 2'8 provides-a feed. passage forthe'molt'en metal to.

that part ofhu'b l8whichbecomes the groove 22"; with".such-construction; it will be clear that burrs or -other finish marks-resulting from removal" of the tail after. a casting operationmay'not' impair the fihi'sh'ed appearanceof" a mounted separator shieldl0.

If; desired; the mold cavity'may be such' as to form the side" elements l'92'0' of hub; l8" as relatively ihinvmembersg In such" event; however,.Ii prefer alsotoinclude an:enlarged or bulbous. portion 29 on-each side of'th'e'side members ii92'i7, in: general alignment" with the: securing means The? bulbous portions29 will thus be'understood to provide added security and reinforcement' for-a seatingof the: screwin. the hub I 81.

It has" been indicated above that the blade. stamping l-lmay'include an opening or slot: 2 5"to receivetheta-ppedholeionscrew 23.. In many cases=, however; it-wi1lbe" clear that'the natureof' the materials-of blades 'll'and hubs [8 may. permitthe drillingan'd tapping ofthehole for screws 23-'not' only'through'the' hub l8! but also into the. part Ziofbl'ade-lrli In such event a special slot Z'E-in-the blade I1- would be'unnecessary.

lt'willbe appreciated that" I' have described a unique separator-shieldconstruction having features which tend to avoid objections raised against prior-art constructions. The blade is Lemma resiliently yieldable so as to resist breakage and to absorb shocks; the blade may be of extremely smooth finish so as in no way to impair the quality of the spum yarn; and an.- a-ssemblyof my separatorrshzields may. be of"sncl"m1ighti weight, when compared with many prior structures, as to increase the operating efiiciency oi the machine by reducing shutdown time for separator-shield replacements.

While-.Lhav-e described my invention in detail for the preferred form shown, it will be understood that modifications may be made within the scope of-the invention as defined in the appended claims.

I claim:

1. In'aseparatonshiel'd for spinning'iramesz'and the like; a separator plate of sheetmaterial' saidf plate having an anchoring means; a hub formed"- integrally and: in one piece with said 'separator plate" and; embracing said anchoring." means and; both sides ofsaidiplates adjacent said anchoring means; said'hubhaving apart to be secured. to. aa.

support.-

2. In the combination defined" in claim 1,..saidif hub having an aperture'extending inwardly in' a. directiongenerally parallel to said plate andextending inwardlybeyond theadjacentedgeofl'the; plate embraced by said-hub adjacent said aperture.

3.- In' a separator shield for spinning. frames. and the'like', aseparator plate of'sheet'mat'eri'ahj. said plate having an aperture .transverselytherea through, a'hub'formed integrally andin one. piece. withsaid'plate and embracing" opposite sides of." said plate, saidhub' having 'an integral anchOr..-. ing bridge extending through saidapertureand between the parts embracing opposite sides of. said plate, saidhubhaving'a'part1to. besecuredi to a support. I

RICHARD K;

REFERENCES (EIflE-D The f0ll0wingreerences areof record'i-nsthe: file of this. patent;

UNITED] STATES PATENTS Name Date. Whittum.' June.4, .1-8'95. Dreyitson Nov. .3, 1914 Hendrickson Aug...4,.l931..

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